When Krystal Jung found out that her crush Aiden Liu is already dating her cousin Nicole everything fell out of place. 

She started ignoring the latter. Will Aiden be able to notice Krystal's unrequited love? or see her only as a dongsaeng.

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Krystal Jung Soojung

18 years old

Kind of introvert

Shy and cold

Top Student 

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Aiden Joseph Liu

19 years old

Easy and outgoing

Very down to earth

Kind of a player

Basketball MVP

Bassist of the band AFFLICTION

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Minor Characters:

Jessica Jung Sooyeon

20 years old 

Krystal's older sister

Ice Princess

School Soccer Team's Captain (Girls)

Kwon Yul's girlfriend

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Kwon Yul

20 years old

Aiden's cousin

Kkab and friendly

School Soccer Team's Captain (Boys)

Whipped

Jessica Jung's boyfriend

Also a part of the band AFFLICTION

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AFFLICTION (Band)

Kim Taeng

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Im Yoong

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Choi Sooyoung

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Kwon Yul

Liu Aiden

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The Pioneer Group (Schoolpaper)

Tiffany Hwang

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Seo Juhyun

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Others:

Lee Sunkyu

Kim Hyoyeon

Choi Jinri